In caring for a patient admitted with poorly controlled hypertension, which laboratory test result should the nurse understand as indicating the presence of target organ damage?
- Serum uric acid of 3.8 mg/dL
- Serum creatinine of 2.6 mg/dL
- Serum potassium of 3.5 mEq/L
- Blood urea nitrogen of 15 mg/dL